42628022 has 4 divisors (see below), whose sum is σ = 63942036. Its totient is φ = 21314010.

The previous prime is 42628021. The next prime is 42628043. The reversal of 42628022 is 22082624.

42628022 is nontrivially palindromic in base 13.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 42627982 and 42628000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42628021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10657004 + ... + 10657007.

It is an arithmetic number, because the mean of its divisors is an integer number (15985509).

Almost surely, 2^42628022 is an apocalyptic number.

42628022 is a deficient number, since it is larger than the sum of its proper divisors (21314014).

42628022 is a wasteful number, since it uses less digits than its factorization.

42628022 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21314013.

The product of its (nonzero) digits is 3072, while the sum is 26.

The square root of 42628022 is about 6529.0138612198. The cubic root of 42628022 is about 349.3266564467.

The spelling of 42628022 in words is "forty-two million, six hundred twenty-eight thousand, twenty-two".